I have a bunch of boats and skis. My best SINK surf kayak is a Mako Aquarius, I have three different wave skis that I use depending on the conditions. It's ended up I surf wave skis 90% of the time. If you don't have a bomb proof roll on a wave ski you are not going to have a bomb proof roll in a Neutron either. With a waveski if you blow your roll, you just climb back on. This gives you a lot of confidence to surf on your own in conditions you might hesitate to go out in your kayak. I've found that my worst wave ski performs just as well as my surf kayak, which is pretty decent. If you have small choppy waves or end up surfing in stormy conditions you probably don't want the neutron but maybe a longer international class boat or maybe something like an old original Mako surf kayak. I have found what I like better is a longer more stable ski for such conditions. Look into an Island HP longboard or an Infinity Waveski. Having a HP longboard made for you is going to be much cheaper than buying a plastic neutron.
Lastly if you are surfing crowded breaks waveskis get a lot more respect and acceptance in the line up, which means you can surf more places and have more fun when you do.
Decent skis around here can be had for ~400 dollars, I bought one for $140 bucks and fixed it up. For $800 bucks you can usually get a pretty nice used ski or a good surf kayak that has had some hard use. I too would go cheap and try both over time, and see what you like best. You can change the position of foot wells and straps on skis if you need to.